Overview
The ADE7878ACPZ-RL is a high-accuracy, 3-phase electrical energy measurement IC produced by Analog Devices Inc. This integrated circuit is designed to provide precise measurements of electrical energy in various 3-phase configurations, including wye or delta services with three or four wires. It supports multiple standards such as EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23, ensuring compliance with international energy measurement requirements.
Key Specifications
| Specification | Details |
|---|---|
| Accuracy | Less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at TA = 25°C; less than 0.2% error over a dynamic range of 3000 to 1 at TA = 25°C |
| ADC Type | Second-order sigma-delta (Σ-∆) analog-to-digital converters (ADCs) |
| Interfaces | SPI, I2C, and high speed data capture (HSDC) port |
| Power Measurement | Total (fundamental and harmonic) active, reactive, and apparent energy; fundamental-only active and reactive energy |
| Sensors Supported | Current transformer and di/dt current sensors |
| Power Quality Measurements | Short duration low or high voltage detections, short duration high current variations, line voltage period measurement, and angles between phase voltages and currents |
| Low Power Modes | Three low power modes (PSM1, PSM2, PSM3) for energy accumulation continuity during tampering situations |
Key Features
- High accuracy in energy measurements with less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at TA = 25°C
- Supports system calibration features including rms offset correction, phase calibration, and gain calibration for each phase
- Compatible with 3-phase, 3- or 4-wire (delta or wye) services
- Dedicated ADC channel for neutral current input
- Power quality measurements such as voltage and current variations, line voltage period, and phase angles
- Multiple serial interfaces (SPI, I2C, HSDC) and interrupt request pins (IRQ0, IRQ1)
- Low power modes to ensure continuity of energy accumulation during tampering situations
Applications
The ADE7878ACPZ-RL is suitable for various applications requiring precise 3-phase electrical energy measurements, including:
- Smart meters and advanced metering infrastructure (AMI)
- Industrial energy monitoring systems
- Commercial and residential energy management systems
- Power quality monitoring and analysis
Q & A
- What is the accuracy of the ADE7878ACPZ-RL in energy measurements?
The ADE7878ACPZ-RL has an accuracy of less than 0.1% error in active and reactive energy over a dynamic range of 1000 to 1 at TA = 25°C, and less than 0.2% error over a dynamic range of 3000 to 1 at TA = 25°C. - What types of sensors does the ADE7878ACPZ-RL support?
The ADE7878ACPZ-RL supports current transformer and di/dt current sensors. - What serial interfaces are available on the ADE7878ACPZ-RL?
The ADE7878ACPZ-RL features SPI, I2C, and a high speed data capture (HSDC) port. - Does the ADE7878ACPZ-RL support power quality measurements?
Yes, the ADE7878ACPZ-RL includes power quality measurements such as short duration low or high voltage detections, short duration high current variations, line voltage period measurement, and angles between phase voltages and currents. - What are the low power modes available on the ADE7878ACPZ-RL?
The ADE7878ACPZ-RL has three low power modes (PSM1, PSM2, PSM3) to ensure continuity of energy accumulation during tampering situations. - Is the ADE7878ACPZ-RL compatible with different 3-phase configurations?
Yes, it is compatible with 3-phase, 3- or 4-wire (delta or wye) services. - Does the ADE7878ACPZ-RL have dedicated channels for neutral current input?
Yes, the ADE7878ACPZ-RL has a dedicated ADC channel for neutral current input. - What standards does the ADE7878ACPZ-RL comply with?
The ADE7878ACPZ-RL complies with EN 50470-1, EN 50470-3, IEC 62053-21, IEC 62053-22, and IEC 62053-23 standards. - What are the typical applications of the ADE7878ACPZ-RL?
Typical applications include smart meters, industrial energy monitoring systems, commercial and residential energy management systems, and power quality monitoring and analysis. - How does the ADE7878ACPZ-RL handle interrupt events?
The ADE7878ACPZ-RL has two interrupt request pins (IRQ0, IRQ1) to indicate that an enabled interrupt event has occurred.
